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reaction
UK
/rɪˈækʃən/
US
/riˈækʃən/
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reaction
noun
reactions
pl
UK
/rɪˈækʃən/
US
/riˈækʃən/
réaction
Her reaction to the surprise party was one of sheer joy.
Sa réaction à la fête surprise était une joie pure.
réaction chimique
Chimie.
The reaction between vinegar and baking soda produces carbon dioxide gas.
La réaction chimique entre le vinaigre et le bicarbonate de soude produit du dioxyde de carbone.
réaction
Médecine ; souvent avec un complément précisant la cause ou l’allergène.
He had a severe allergic reaction to the peanuts.
Il a eu une grave réaction allergique aux cacahuètes.
réaction
Politique, sociologie.
The new policy was met with strong reaction from conservative groups.
La nouvelle politique a suscité une forte réaction de la part des groupes conservateurs.
réaction
Physique.
When the rocket expels gas downward, the equal and opposite reaction propels it upward.
Lorsque la fusée expulse des gaz vers le bas, la réaction égale et opposée la propulse vers le haut.
réflexes
Au pluriel, surtout dans le sport et les jeux vidéo.
A gamer needs quick reactions to compete at the highest level.
Un joueur a besoin de réflexes rapides pour concourir au plus haut niveau.
Synonyms
response
reply
retort
rejoinder
feedback
counteraction
action
effect
result
reaction
adjective
UK
/riˈækʃən/
US
/riˈækʃən/
Used attributively before another noun (e.g., "reaction time", "reaction vessel").
réactionnel
Technique, surtout en chimie.
The chemist poured the solution into a reaction vessel.
Le chimiste a versé la solution dans un récipient réactionnel.
Synonyms
reactive
responsive
reflexive
instinctive
automatic
impulsive
spontaneous
unthinking
reactionary
Definitions
reaction
noun
A response to a stimulus or situation.
Her reaction to the surprise party was one of sheer joy.
A chemical process in which substances interact to form new substances.
The reaction between vinegar and baking soda produces carbon dioxide gas.
A physiological response to a substance, such as an allergen.
He had a severe allergic reaction to the peanuts.
A movement or tendency opposing a current trend or political change.
The new policy was met with strong reaction from conservative groups.
In physics, a force exerted by a body equal in magnitude and opposite in direction to an applied force.
When the rocket expels gas downward, the equal and opposite reaction propels it upward.
The ability or speed with which someone responds to a stimulus, especially in physical activities (usually plural).
A gamer needs quick reactions to compete at the highest level.
reaction
adjective
Relating to, resulting from, or used for a reaction, especially a chemical reaction.
The chemist poured the solution into a reaction vessel.
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